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April 20, 2014

April 20, 2014

Posted by **Kim** on Wednesday, March 25, 2009 at 2:06pm.

- Pre-Cal -
**drwls**, Wednesday, March 25, 2009 at 3:23pmsqrt (-18) = sqrt(-1*9*2) = 3 i sqrt2

The two imaginary parts cancel out when you subtract, and you are left with just 8 - 4 = 4.

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